Augusts desgoffe and achillb ollivibe



NTTED STATES PATENT OFFICE.

AUGUSTE DESGOFFE AND ACHILLE OLLIVIER, OF PARIS, FRANCE.

HYDRAULIC APPARATUS.-

Specification forming part of Letters Patent No. 46.315, dated February7, 1865.

To all fu-hom t may concern y Be it known that we, AUGUSTE DEseoFFE andACHILLE OLLIVIER, of Paris, in the Empire of France, have invented a newand Improved Stereohydraulic Apparatus; and we do hereby declare thatthe following is a full, clear, and exact description thereof, whichwill 'enable others skilled in the art .to make and use the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure lis a longitudinal vertical section ofthis invention, the line x x, Fig. 2, indicating the plane ot' section.Fig. 2 is a plan or top view of the same, partly in section.

Similar letters of reference indicate like parts.

This invention consists in gradually introducing in a watertight vesselor box, which is filled with water or other non-compressible liquid, andprovided with one or-more movable sides or pistons, or made expansiblewith a cord or rope in such a manner that by said cord or rope theliquid in the box or portion of the same isdisplaced and a powerfulpressure is exerted on the sides of the box, which, when movable orexpansible, transmit the power thus exerted on their inner surfaces tobodies placed against their outer surfaces, and a powerful pressure canbe exerted with comparatively little power and with an apparatus of asimple and cheap construction.

A represents a vessel or box, made of cast` iron or any other suitablematerial, strong and durable, and perfectly water-tight. This box isprovided with a movable side or piston, 13,01, it' desired, two or moresuch pistons may be provided, or the entire box may be made of someexpansible material, according to the work to be performed by theapparatus.

G is a shaft, which passes transversely through the box A, and mountedon this shaft is a pulley, l), as clearly shown in the drawin gs. Fromthe outside of the box A project two brackets, e, which form thebearings for a shaft, E, and mounted on this shaft is a pulley, F,similar to the pulley D on the shaft C andin line with the same. Bothshafts C and E are provided with suitable handles or cranks, by means ofwhich they can be turned in either direction, and a cord or rope, b, isiastened with one end to the pulley, D and with the other end to thepulley F, so that by turning the shafts in the proper direction the ropecan be wound up on either of the pulleys.

In order to prevent the escape of liquid from the box A, the rope passesthrough a stufiingbox, c, and a safety-valve, d, of any suitableconstruction, which shows the pressure existing in the box and preventsaceidents.

At the beginning of the operation all the rope is wound on the outerpulley, F, the plunger or piston B is in the position shown in thedrawings, and the box A is hlled with water or other non-compressibleliquid.

By turning the shaft C in the'direction of the arrow, marked near it inFig. l of the drawings, the rope winds or unwinds from the pulley F andwinds on the pulley D, and the liquid in the box A is displaced. Apowerful pressure is thus exerted on the inner surface of the piston B,and, it' said piston is to be used for compressing certain articles ormaterials, the operation can be performed with a comparatively smallexpenditure of power.

lt will be noticed that the principle on which our apparatus operates isprecisely the same as that of an ordinary hydraulic press, but insteadof having a small piston of a short length towhich a reciprocatingmotion must be imparted in order to produce the desired effect, we use acontinuous or very extended piston,whicl1 is represented by the rope I).

By inclosing the pulley F in a water-tight box, with one or moreplungers, the apparatus is rendered double-acting, so that while theplunger or plungers of one box are forced out those of the other boxrecede, and vice versn.

We claim as new and desire to secure by Letters Patent- The employmentor use of a rope, b, or its equivalent, in combination with a box, A,provided with one or more plungers or movable sides, or made of someexpansible material, substantially as and for the purposes set forth.

A. DESG'OFFE. A. oLLivrnR.

Witnesses LAVUELLY. A W. G. LA FRANCE.

